Angular moments of the decay Λ
                        b
                                                 
                        0
                         → Λμ 
                        +
                         μ 
                        −
                         at low hadronic recoil

LHCb Collaboration

doi:10.1007/JHEP09(2018)146

Angular moments of the decay Λ _b ⁰ → Λμ ⁺ μ ⁻ at low hadronic recoil

LHCb Collaboration

Physics and Astronomy

Research output: Contribution to journal › Article › peer-review

23 Citations (Scopus)

152 Downloads (Pure)

Abstract

An analysis of the angular distribution of the decay Λ _b ⁰ → Λμ ⁺ μ ⁻ is presented, using data collected with the LHCb detector between 2011 and 2016 and corresponding to an integrated luminosity of approximately 5 fb ⁻¹ . Angular observables are determined using a moment analysis of the angular distribution at low hadronic recoil, corresponding to the dimuon invariant mass squared range 15 < q ² < 20 GeV ² /c ⁴ . The full basis of observables is measured for the first time. The lepton-side, hadron-side and combined forward-backward asymmetries of the decay are determined to beAFBℓ=−0.39±0.04(stat)±0.01(syst),AFBh=−0.30±0.05(stat)±0.02(syst),AFBℓh=+0.25±0.04(stat)±0.01(syst). The measurements are consistent with Standard Model predictions.[Figure not available: see fulltext.].

Original language	English
Article number	146
Journal	Journal of High Energy Physics
Volume	2018
Issue number	9
DOIs	https://doi.org/10.1007/JHEP09(2018)146
Publication status	Published - 26 Sept 2018

Bibliographical note

The LHCb collaboration, Aaij, R., Adeva, B. et al. J. High Energ. Phys. (2018) 2018: 146. https://doi.org/10.1007/JHEP09(2018)146

Keywords

B physics
FCNC Interaction
Flavor physics
Hadron-Hadron scattering (experiments)
Rare decay

ASJC Scopus subject areas

Nuclear and High Energy Physics

Access to Document

10.1007/JHEP09(2018)146Licence: Creative Commons: Attribution (CC BY)

Aaij_et_al_Angular_moments_of_the_decay_Journal_of_High_Energy_Physics_2018
The LHCb collaboration, Aaij, R., Adeva, B. et al. J. High Energ. Phys. (2018) 2018: 146. https://doi.org/10.1007/JHEP09(2018)146
Final published version, 588 KBLicence: Creative Commons: Attribution (CC BY)

Cite this

LHCb Collaboration (2018). Angular moments of the decay Λ _b ⁰ → Λμ ⁺ μ ⁻ at low hadronic recoil. Journal of High Energy Physics, 2018(9), Article 146. https://doi.org/10.1007/JHEP09(2018)146

LHCb Collaboration. / Angular moments of the decay Λ _b ⁰ → Λμ ⁺ μ ⁻ at low hadronic recoil. In: Journal of High Energy Physics. 2018 ; Vol. 2018, No. 9.

@article{a0310805063b4a2e810b11330397b153,

title = "Angular moments of the decay Λ b 0 → Λμ + μ − at low hadronic recoil",

abstract = " An analysis of the angular distribution of the decay Λ b 0 → Λμ + μ − is presented, using data collected with the LHCb detector between 2011 and 2016 and corresponding to an integrated luminosity of approximately 5 fb −1 . Angular observables are determined using a moment analysis of the angular distribution at low hadronic recoil, corresponding to the dimuon invariant mass squared range 15 < q 2 < 20 GeV 2 /c 4 . The full basis of observables is measured for the first time. The lepton-side, hadron-side and combined forward-backward asymmetries of the decay are determined to beAFBℓ=−0.39±0.04(stat)±0.01(syst),AFBh=−0.30±0.05(stat)±0.02(syst),AFBℓh=+0.25±0.04(stat)±0.01(syst). The measurements are consistent with Standard Model predictions.[Figure not available: see fulltext.]. ",

keywords = "B physics, FCNC Interaction, Flavor physics, Hadron-Hadron scattering (experiments), Rare decay",

author = "R. Aaij and B. Adeva and M. Adinolfi and Aidala, {C. A.} and Z. Ajaltouni and S. Akar and P. Albicocco and J. Albrecht and F. Alessio and M. Alexander and {Alfonso Albero}, A. and S. Ali and G. Alkhazov and {Alvarez Cartelle}, P. and Alves, {A. A.} and S. Amato and S. Amerio and Y. Amhis and L. An and L. Anderlini and G. Andreassi and M. Andreotti and Andrews, {J. E.} and Appleby, {R. B.} and F. Archilli and P. d{\textquoteright}Argent and {Arnau Romeu}, J. and A. Artamonov and M. Artuso and K. Arzymatov and E. Aslanides and M. Atzeni and B. Audurier and S. Bachmann and Back, {J. J.} and S. Bifani and R. Calladine and G. Chatzikonstantinidis and N. Farley and P. Griffith and P. Ilten and C. Lazzeroni and A. Mazurov and L. Pescatore and J. Plews and D. Popov and A. Sergi and M. Wang and Watson, {N. K.} and Zarebski, {K. A.} and {LHCb Collaboration}",

note = "The LHCb collaboration, Aaij, R., Adeva, B. et al. J. High Energ. Phys. (2018) 2018: 146. https://doi.org/10.1007/JHEP09(2018)146",

year = "2018",

month = sep,

day = "26",

doi = "10.1007/JHEP09(2018)146",

language = "English",

volume = "2018",

journal = "Journal of High Energy Physics",

issn = "1126-6708",

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LHCb Collaboration 2018, 'Angular moments of the decay Λ _b ⁰ → Λμ ⁺ μ ⁻ at low hadronic recoil', Journal of High Energy Physics, vol. 2018, no. 9, 146. https://doi.org/10.1007/JHEP09(2018)146

Angular moments of the decay Λ _b ⁰ → Λμ ⁺ μ ⁻ at low hadronic recoil. / LHCb Collaboration.
In: Journal of High Energy Physics, Vol. 2018, No. 9, 146, 26.09.2018.

Research output: Contribution to journal › Article › peer-review

TY - JOUR

T1 - Angular moments of the decay Λ b 0 → Λμ + μ − at low hadronic recoil

AU - Aaij, R.

AU - Adeva, B.

AU - Adinolfi, M.

AU - Aidala, C. A.

AU - Ajaltouni, Z.

AU - Akar, S.

AU - Albicocco, P.

AU - Albrecht, J.

AU - Alessio, F.

AU - Alexander, M.

AU - Alfonso Albero, A.

AU - Ali, S.

AU - Alkhazov, G.

AU - Alvarez Cartelle, P.

AU - Alves, A. A.

AU - Amato, S.

AU - Amerio, S.

AU - Amhis, Y.

AU - An, L.

AU - Anderlini, L.

AU - Andreassi, G.

AU - Andreotti, M.

AU - Andrews, J. E.

AU - Appleby, R. B.

AU - Archilli, F.

AU - d’Argent, P.

AU - Arnau Romeu, J.

AU - Artamonov, A.

AU - Artuso, M.

AU - Arzymatov, K.

AU - Aslanides, E.

AU - Atzeni, M.

AU - Audurier, B.

AU - Bachmann, S.

AU - Back, J. J.

AU - Bifani, S.

AU - Calladine, R.

AU - Chatzikonstantinidis, G.

AU - Farley, N.

AU - Griffith, P.

AU - Ilten, P.

AU - Lazzeroni, C.

AU - Mazurov, A.

AU - Pescatore, L.

AU - Plews, J.

AU - Popov, D.

AU - Sergi, A.

AU - Wang, M.

AU - Watson, N. K.

AU - Zarebski, K. A.

AU - LHCb Collaboration

N1 - The LHCb collaboration, Aaij, R., Adeva, B. et al. J. High Energ. Phys. (2018) 2018: 146. https://doi.org/10.1007/JHEP09(2018)146

PY - 2018/9/26

Y1 - 2018/9/26

N2 - An analysis of the angular distribution of the decay Λ b 0 → Λμ + μ − is presented, using data collected with the LHCb detector between 2011 and 2016 and corresponding to an integrated luminosity of approximately 5 fb −1 . Angular observables are determined using a moment analysis of the angular distribution at low hadronic recoil, corresponding to the dimuon invariant mass squared range 15 < q 2 < 20 GeV 2 /c 4 . The full basis of observables is measured for the first time. The lepton-side, hadron-side and combined forward-backward asymmetries of the decay are determined to beAFBℓ=−0.39±0.04(stat)±0.01(syst),AFBh=−0.30±0.05(stat)±0.02(syst),AFBℓh=+0.25±0.04(stat)±0.01(syst). The measurements are consistent with Standard Model predictions.[Figure not available: see fulltext.].

AB - An analysis of the angular distribution of the decay Λ b 0 → Λμ + μ − is presented, using data collected with the LHCb detector between 2011 and 2016 and corresponding to an integrated luminosity of approximately 5 fb −1 . Angular observables are determined using a moment analysis of the angular distribution at low hadronic recoil, corresponding to the dimuon invariant mass squared range 15 < q 2 < 20 GeV 2 /c 4 . The full basis of observables is measured for the first time. The lepton-side, hadron-side and combined forward-backward asymmetries of the decay are determined to beAFBℓ=−0.39±0.04(stat)±0.01(syst),AFBh=−0.30±0.05(stat)±0.02(syst),AFBℓh=+0.25±0.04(stat)±0.01(syst). The measurements are consistent with Standard Model predictions.[Figure not available: see fulltext.].

KW - B physics

KW - FCNC Interaction

KW - Flavor physics

KW - Hadron-Hadron scattering (experiments)

KW - Rare decay

UR - http://www.scopus.com/inward/record.url?scp=85054321409&partnerID=8YFLogxK

U2 - 10.1007/JHEP09(2018)146

DO - 10.1007/JHEP09(2018)146

M3 - Article

AN - SCOPUS:85054321409

SN - 1126-6708

VL - 2018

JO - Journal of High Energy Physics

JF - Journal of High Energy Physics

IS - 9

M1 - 146

ER -

LHCb Collaboration. Angular moments of the decay Λ _b ⁰ → Λμ ⁺ μ ⁻ at low hadronic recoil. Journal of High Energy Physics. 2018 Sept 26;2018(9):146. doi: 10.1007/JHEP09(2018)146

Angular moments of the decay Λ b 0 → Λμ + μ − at low hadronic recoil